What's the cost & where to buy an Alternator harness plug on a 2009 Nissan Muran

So, unless there is widespread damage to the harness, you'll need to find a hardshell connector for the damaged component. Nissan may only offer this with the purchase of the harness. However, I would reach out to aftermarket parts sources and salvage yards to see what you can come up with. It's possible no one makes a replacement part for this, but I would guess that it is available somehow someway with a little digging. Find out the exact part you need from the dealership that inspected it, and start reaching out and searching. Good luck.

Salvage yard may have the part needed .. NAPA has a very good selection of wiring connectors that are plug and play .. Seems all you need is the *pigtail connector* itself - not the complete wiring harness.. IF all else fails .. Find an old school - experienced mechanic in your area to repair damaged wiring connector. I've fixed a bunch of em on various vehicles.